Final answer:
The correct option is 'Environment, Collection, Metadata' and it relates to how an environment in computing is organized with regards to the metadata it holds.
Step-by-step explanation:
The question is asking about the concepts related to computing and specifically about organization of data within computational environments. The correct answer to the question '___ can be described as a ___ of ___ containing different IDs, variables, and characters' is a. Environment, Collection, Metadata. This implies that an environment can be described as a collection of metadata which may include identifiers, variables, and characters that are used to provide context or additional information about data.